Electricity cost calculator
Online calculator of electric energy cost. First you set the price for a 1kWh (one kilo-watt). Then you specify all the electric devices you use, and how much of time they are used daily. The calculator computes the yearly, montly and daily usage of an electric energy, and its overall cost... This can be used for household computation, but also for any business costs estimation.

Price for single energy unit (kWh)

The cost of power
Cost of 1 kWh$ / € / any other

Hardware list - put your devices here

Electric hardwareresultsaction
Namehardware
power
[W]
number of
devices
daily usage
(average)
resultsspent energy
[kWh]
cost
[$ € other]
h m
daily
monthly
yearly
0.25
7.5
91.25
0.16
5.04
61.42
remove
h m
daily
monthly
yearly
2
60
730
1.34
40.38
491.36
remove
h m
daily
monthly
yearly
0.5
15
182.5
0.33
10.09
122.84
remove

Add hardware wizard - use it to add new device to calculator

ADDING MORE DEVICES HEREor click one of predefined devices below.
bulbbulb 40Wbulb 60Wbulb 80Wbulb 100Wenergy saving bulb 18Wenergy saving bulb 20Wenergy saving bulb 23W
kitchenkettleekspres do kawyovenstoverefrigeratorfreezerextractor hoodmicrowave ovendishwashertoaster
bathroomfanwashing machineblowdryer
consumer electronicsDVDlaptopdesktop computerhome cinemaaudio equipmentanalog TVplasma displayLCD displayset-top box
home appliancevacuum cleanerelectric iron
heatingstorage water heaterstorage water heaterunderfloor heatingelectric heaterfan heater
outdoorlightinggarage doorelectric lawn mower

Summary - how much energy do you use and how much do you pay for it

devicespent energy [kWh]cost
daymonthyeardaymonthyear
device #1
0.25
7.5
91.25
0.17
5.5
61.42
device #2
2
60
730
1.35
40.39
491.36
device #3
0.5
15
182.5
0.34
10.10
122.84
all devices
2.75
82.5
1003.75
1.85
55.53
675.62

How to use this tool

To find out the energy cost:
  • Enter the cost of 1 kWh of electric energy. This is exact price of energy you pay every month to you electric energy provider.
    The best way to find the real energy cost: try finding your last energy invoice and find the "price for 1 kWh".
  • Specify all electric devices
    You can click on "Click here to add one simple device" in the calculator - then enter the nominal electric power of the device, and the average time that this device is turned on every day.
    You can also use some shorcuts below - we prepared a list of frequently used devices in a typical household. Just click "washing machine", and the typical washing machine will be added. Of course, you can adjust the power consumption and time of daily usage for the particular device.
  • The results #1 - in the table, next to the specified devices, you can find the cost and the energy usage by daily, montly and annual scale.
  • The results #2 - below the "shortcut devices", you can find the resulting table in a more "compact" format. This also displays costs by year, month and day usage.
  • results #1 and results #2 are the computed the same way, the only difference is they are displayed in a different manner.

History of changes, improvements and fixes to this calculator

2013.08.31 BUG FIX: Change of "cost of 1KWh" was not working. The calculator was simply ignoring entered value. It is FIXED now.

Tags and links to this website

Links to external sites (leaving Calculla?)

Ancient version of this site - links

"Calculla v1" version of this calculatorIn December 2016 the Calculla website has been republished using new technologies and all calculators have been rewritten. Old version of the Calculla is still available through this link: v1.calculla.com. We left the version 1 of Calculla untouched for archival purposes.
Direct link to the old version:
JavaScript failed !
So this is static version of this website.
This website works a lot better in JavaScript enabled browser.
Please enable JavaScript.